封装异步方法调用的结果。 更多...
| 头： | #include <QRemoteObjectPendingCall> |
| qmake: | QT += remoteobjects |
| 继承者： |
QRemoteObjectPendingCallWatcher and QRemoteObjectPendingReply |
| enum | Error { NoError, InvalidMessage } |
| QRemoteObjectPendingCall::Error | error () const |
| bool | isFinished () const |
| QVariant | returnValue () const |
| bool | waitForFinished (int timeout = 30000) |
This enum type specifies the possible error values for a remote call:
| 常量 | 值 | 描述 |
|---|---|---|
QRemoteObjectPendingCall::NoError
|
0
|
没有出现错误。 |
QRemoteObjectPendingCall::InvalidMessage
|
1
|
The default error state prior to the remote call finishing. |
返回错误，若有的话，从远程调用。
Returns true if the remote call has finished, false otherwise.
A finished call will include a returnValue or error .
Returns the return value of the remote call.
returnValue will only be valid when the remote call has finished and there are no error 。
阻塞最多 timeout milliseconds, until the remote call has finished.
返回
true
当成功时，
false
否则。
